swift3.0懒加载,自定义构造函数创建

  近期在使用swift3.0开发,遇到了不少新的知识,于是想记录,并分享出来:

懒加载:

  

  fileprivate lazy var scrollView : UIScrollView = {
        let scrollView = UIScrollView()
        
        scrollView.showsHorizontalScrollIndicator = false
        
        scrollView.scrollsToTop = false
        scrollView.isPagingEnabled = false
        scrollView.bounces = false
        return scrollView
    }()

 

  

 

自定构造函数:

 //自定义构造函数
    init(frame: CGRect, titles: [String]) {
        self.titles = titles
        
        super.init(frame: frame)
        
        setUi()
    }
    
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
        
    }

 

posted on 2017-04-01 17:44  高彰  阅读(345)  评论(0编辑  收藏  举报

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